EP 3921302 A1 20211215 - PROCESS FOR PURIFYING 4,4'-DICHLORODIPHENYL SULFOXIDE
Title (en)
PROCESS FOR PURIFYING 4,4'-DICHLORODIPHENYL SULFOXIDE
Title (de)
VERFAHREN ZUR REINIGUNG VON 4,4'-DICHLORDIPHENYL-SULFOXID
Title (fr)
PROCÉDÉ DE PURIFICATION DE 4,4'-DICHLORODIPHÉNYLE SULFOXIDE
Publication
Application
Priority
- EP 19156198 A 20190208
- EP 2020052966 W 20200206
Abstract (en)
[origin: WO2020161225A1] The invention relates to a process for purifying 4,4'-dichlorodiphenyl sulfoxide comprising: (a) providing a suspension comprising particulate 4,4'-dichlorodiphenyl sulfoxide in monochlorobenzene, (b) solid-liquid separation of the suspension to obtain residual moisture containing 4,4'- dichlorodiphenyl sulfoxide, (c) washing residual moisture containing 4,4'-dichlorodiphenyl sulfoxide with monochlorobenzene, (d) optionally repeating steps (a) to (c).
IPC 8 full level
C07C 315/06 (2006.01); C07C 317/14 (2006.01)
CPC (source: EP KR US)
C07C 315/06 (2013.01 - EP KR US); C07C 317/14 (2013.01 - EP KR); C07B 2200/13 (2013.01 - KR)
Citation (search report)
See references of WO 2020161225A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020161225 A1 20200813; CN 113396141 A 20210914; EP 3921302 A1 20211215; EP 3921302 B1 20230201; JP 2022520198 A 20220329; KR 20210124403 A 20211014; US 2022135523 A1 20220505
DOCDB simple family (application)
EP 2020052966 W 20200206; CN 202080012829 A 20200206; EP 20702658 A 20200206; JP 2021546716 A 20200206; KR 20217028577 A 20200206; US 202017429200 A 20200206